... press machine/Oil Expeller 1. Screw oil press 2. Electrical element for heating chamber . 3. Vacuum fil automatic oil press machine ... press machine for oil crops1. Screw oil press 2. Electrical element for heating chamber . 3. Vacuum filter for clean crude oil ... different oil yielding. 4. It includes screw oil press, eletrical element for heatingchamber, and the vacuume filter can be for clearing ...